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4389 "S"
()
S
( )
S,
coal
sack
Sacramento
peak observatory
Sa
galaxy
sag
car
SAGE
SAGE
neutrino detector
sagitta
sagittal
sagittal
focus
Saha
equation
Saha's
equation
Saha's
ionization formula
random
sample
over
sampling
sampling
theorem
sandwich
construction
sandwich
mirror
SAO
SAO
star catalog
Saros
Sa
Sb galaxy
Sa
SB spiral
Sa
spiral
weather
satellite
satellite
astronomy
satellite-borne
satellite-borne
instruments
satellite
branches
satellite
camera
satellite
drag
satellite
in long-lived orbit
satellite
line
satellite
observations
satellite
observatory
Earth
satellite
orbit
artificial Earth
satellite
program(me)
satellite-range
measurement
satellite's
motion
satellite's
orbit
satellite
spectroscopy
satellite's
period
satellite's
spin
satellite
system
satellite
track
satellite
tracking
satellite
trail
satellite
vehicle
saturated
saturated
color
saturation
saturation
effect
saturation
function
daylight
saving
time
Sa
Sb
galaxy
S-branch
SB
Sb spiral
Sb
Sc galaxy
Sb
Sc spiral
SB
Sb
spiral
vernier
scale
scale
correction
scale
factor
relative
scale
of distances
scale
of micrometer
scale
of the Galaxy
scale
of the universe
gray
scale
resolution
true
scale
Value
scale
Value of telescope
grey
scaling
spiral
scan
scandium
scanner
two-dimensional
scanning
scanning
device
scanning
drive
scanning
element
frequency
scanning
method
scanning
motion
scanning
rate
scan
strip scan
scatter
scatter
diagram
scattered
beam
scattered
electrons
scattered
light
scattered
radiation
scattered
star light
scattered
starlight
scattered
sunlight
wide-angle
scattering
scattering
atmosphere
Thomson
scattering
coefficient
scattering
cross-section
scattering
effect
scattering
efficiency
scattering
electron
scattering
function
scattering
law
scattering
matrix
scattering
medium
scattering
power
scattering
theory
Sb
Sc
galaxy
term
scheme
scheme
of band heads
Schiefspiegler
telescope
solid-block
Schmidt
Schmidt
aplanatic sphere camera
super
Schmidt
camera
Schmidt
camera optics
Schmidt-Cassegrain
telescope
Schmidt
plate
Schmidt's
tube
Schmidt
system
UK
Schmidt
telescope
Schottky
effect
Schrodinger's
equation
Schuman-Runge
bands
Schuster-Schwarzschild
method
Schuster-Schwarzschild
model
Schuster's
n
Schwinger
radiation
space
science
National Space
Science
Data Center
Space Telescope
Science
Institute
scientific
probe
scintillate
scintillation
scintillation
counter
scintillation
detector
scintillation
effects
scintillation
fluctuations
scintillation
in direction
scintillation
in intensity
scintillation
measures
scintillation
noise
scintillation
of radio stars
scintillation
phenomenon
gas
scintillation
proportional counter
scintillation
spectrum
scissoring
vibration
sclera
sclerotic
SCNA
telluric absorption
S-component
scotch
mounting
scotopic
luminosity curve
scotopic
vision
S
s-coupling
image
scrambler
emulsion
scratch
wire
screen
screen
brightness
screen
brilliance
screen
efficiency
screen
illumination
screen
image
screening
screening
constant
screening
effect
screen
intensity
tilting
screen
made of slats
zenith-distance
screw
screw
micrometer
Sc
Seyfert galaxy
Sb
Sc
spiral
Sc
well-developed spiral
sea
interferometer
sea
interferometer
at
sea
level
sealing
wax
search
lunar
seas
season
seasonal
seasonal
anomaly
seasonal
changes
seasonal
variation
observing
seat
arc
second
second
art collision
second-art
transition
Cassegrain
secondary
secondary
color
secondary
cosmic radiation
secondary
cosmic ray
secondary
cosmic rays
secondary
eclipse
secondary
electron
secondary
emission
secondary
image
secondary
ionization
secondary
minimum
secondary
mirror
secondary
mirror cage
secondary
processes
secondary
prominence
secondary
ring
secondary
source
secondary
spectrum
secondary
star
second
contact
second
kind collision
Kepler's
second
law
second
of arc
second
of time
second
order Stark effect
second
subordinate series
second
subsidiary series
conic
section
column of unit cross
sectional
area
box
section
of tube
conic
sections
rotating
sector
sector
acceleration
sector
opening
yearly
secular
secular
aberration
secular
acceleration
secular
contraction
secular
determinant
secular
secular
in declination
secular
secular
in right ascension
secular
parallax
secular
perturbation
secular
precession
secular
secular in declination
secular
secular in right ascension
secular
term
seeing
seeing
bad
seeing
compensator
seeing
conditions
seeing
disk
seeing-disk
diameter
seeing(-disk)
profile
seeing
distortions
seeing
disturbance
seeing
effects
visual
seeing
estimate
seeing
fair
seeing
feature
seeing
good
seeing
image
seeing
measures
stellar
seeing
monitor
seeing
observations
seeing
phenomena
seeing
phenomenon
seeing
poor
visual
seeing
scale
seeing
shifts
seeing
study
seeing
test
seeing
very bad
comet
seeker
the galaxy
seen
edge-on
the galaxy
seen
side-on
integrated spectral
segment
segmented
mirror
Seidel
aberration
seismic
detector
selected
selected
area
selected
equinox
observatory site
selection
selection
effect
symmetry
selection
rule
selection
rules
selective
selective
absorber
selective
absorption
spectrograph interferometric with
selective
amplitude modulation
selective
diffuser
selective
effect
selective
radiator
selective
receiver
selective
sensitivity
selectivity
selenium
cell
selenocentric
selenocentric
orbit
selenodesy
selenographer
selenographic(al)
selenographic
coordinates
selenographist
selenography
selenological
selenology
self-absorption
self-adjusting
self-admittance
self-broadening
self-consistent
field
self-energy
self-excitation
self-feeding
self-gravitation
self-luminous
self-luminous
body
self-luminous
object
self-recording
self-recording
microphotometer
self-registering
self-reversal
self-winding
selsyn
Selvyn
granularity law
semiannual
term
semiconducting
bolometer
semiconductor
semidiameter
semidiurnal
secular
semi-indirect
illumination
semi-infinite
atmosphere
semi
major axis
semimajor
axis
semi
minor axis
semiminor
axis
semipermanent
Hα
semiregular
variables
optical
semithickness
sensibility
sensibilization
remote
sensing
temperature
sensitive
sensitive
amplifier
sensitive
bolometer
phase
sensitive
detector
sensitive
emulsion
sensitive
film
light
sensitiveness
position
sensitive
proportional counter
sensitive
receiver
sensitive
region
sensitive
to light
threshold of
sensitivity
equal
sensitivity
contours
visual
sensitivity
curve
sensitivity
distribution
threshold gradient
sensitivity
function of eye for grains
sensitivity
of system
reception
(sensitivity)
pattern
sensitivity
pattern
optical
sensitization
sensitize
noncolor
sensitized
sensitizer
spectral
sensitizing
sensitometric
processing
Hartmann
sensor
sensory
system
separably
degenerated
Hartley's law of doublet
separating
opposite polarities
separating
line
nuclear
separation
separation
angle
separation
image
angular
separation
of fringes
septet
multiplet
spectral
sequence
sequence
of galactic types
main
sequenceof
star types
sequence
of structural forms
term
sequences
sequence
star
Wood's resonance
series
series
discontinuity
series
disintegration
Ritz
series
formula
series
limit
L long
series
of observations
trigonometric
series
of parallaxes
Serrurier
truss
time
service
time
service
clock
time
service
instrument
time
service
station
servo
servomechanism
servomotor
servo
system
servosystem
NASA extragalactic data
set
set
of comparison stars
set
of observations
set
rate
setting
setting
circle
setting
error
setting
motion
setting
on star
to
set
up
seven-inch
transit circle
sextant
sextet
multiplet
sextet
state
Sc
Seyfert
galaxy
shade
number
shade
tube
optical
shadow
shadow-band
pattern
shadow
bands
shadow-band
structure
shadow
method
shadow
pattern
shadow
photometer
shadow
transit
polar-axis
shaft
()
"shallowing"
Shanghai
observatory
galactic
shape
investigation of
shape
of pivots
shape
of pulse
sharp
edge
sharpening
sharp
image
sharp
series
sharp
solar limb
shearing
interferometer
reflecting
sheet
sheet
reflector
gaseous
shell
clam
shell
dome
shell
of gas
shell
spectrum
shell
star
shell
structure
light
shield
shielding
blue
shift
phase
shifter
zero image
shift
focuser
seeing
shifts
shininess
of the Moon's surface
space
ship
shock
front
shock
tube
shock
wave
shooting
star
short
dipole
short
(duration) burst
telescope of
short
focal length
short-focus
objective
short-lived
burst
short-period
short-period
comet
short-period
erratic motions
short-period
perturbation
short
scan
shortward
short-wave
end
short-wave
fade-out
short-wave
radiation
shot
effect
shot
noise
shoulder
nighttime
shower
shower
meteor
air
showers
Lanphier
shutter
shutter
aperture
shutter
arches
shutter
exposure
shutter
mechanism
shutter
opening
dome
shutters
radiation
sickness
visible
side
broad
side
array
side
effect
side
lobe
sidelobe
sidelobe
(response) level
the galaxy seen
side-on
sidereal
sidereal
clock
sidereal
day
sidereal
drive
sidereal
mean daily motion
sidereal
month
sidereal
period
sidereal
period of rotation at the equator
tracking at
sidereal
rate
sidereal-rate
tracking mechanism
sidereal
rotation
sidereal
rotation period
sidereal
second
local
sidereal
time
sidereal
time at mean midnight
sidereal
year
sideriostat
siderite
siderolite
siderostat
Siding
Springs observatory
Siegbahn
unit
line of
sight
sighting
telescope
sight
line
sight-line
velocity
line of
sight
velocity
-,
σ
σ-bond
sigma
orbital
σ-polarization
σ-
σ-
astronomical
sign
wanted
signal
standard
signal
generator
picture
signal
monitor
signal/noise
signal/noise
performance
signal-noise
ratio
signal/noise
ratio
signal
power
timing
signals
signal-to-noise
signal-to-noise
level
signal-to-noise
ratio
signature
of metric
sign
convention
significance
level
significant
figures
sign
of the zodiac
optical
silica
fused
silica
mirror
silicon
silicon
photocell
La
Silla
observatory
silver
bromide emulsion
silver
bromide grain
silver
chloride emulsion
silver-disk
pyrheliometer
silver
film
exposed
silver
grains
silver
image
silvering
silver
iodide emulsion
silverless
image
silver
reflectivity
principle of
similarity
antenna
simple
antenna
simple
burst
simple
eyepiece
simple
harmonic oscillator
simple
interferometer
simple
lens
simplified
model
target
simulator
single
antenna
single
aperture
single-beam
spectrometer
single-emulsion
film
single
exposure
single
flat arrangement
single
frequency observation
single
frequency radiometer
single-frequency
record
single
lens reflex camera
single-level
absorption
single-picture
taking
single
spot
single
star
singlet
singlet
line
singlet
multiplet
singlet
state
singlet
term
singularity
singular
state
S-interaction
observing
site
site
group
observatory
site
selection
observatory
site
survey
site
surveys
site
telescope
site
testing
site
tests
Einstein-de
Sitter
cosmology
Einstein-de
Sitter
model
de
Sitter's
model
de
Sitter's
universe
Einstein-de
Sitter
universe
six-color
photometry
six-color
system
six-constant
method
sizable
telescope
telescope
size
size
measurement
effective
size
of the Sun
size
orbit size
angular
size
work
skeletal
vibration
sweeps of
sky
International Dark
Sky
association
sky
atlas
sky
background
total
sky
brightness
sky
brightness temperature
sky
darkness
deep
sky
filter
sky
glow
photometric
skyies
sky
light
night
sky
luminance
sky
monitor
total
sky
noise
deep
sky
object
sky
of stars
sky
patrol
sky-patrol
sky
radiation
sky
spectrum
STScI digital
sky
survey
radio
sky
temperature
turbulent
slab
plane-parallel
slabs
S,
Λ-
slap
tilting screen made of
slats
slewing
slewing
drive
slewing-drive
assembly
slewing
motion
slewing
motor
slew(ing)
rate
sliced
paraboloid
image
slicer
vertical
slide
slide
carrier
spectroscope
slit
slit
assembly
slit
image
slit
jaw
slitless
spectrograph
slit-less
spectroscope
slitless
spectrum
slit
mechanism
wide
slit
spectrograph
slit
spectrum
slit
width
slit-width
adjusting screw
Sloan
digital sky survey
talus
slope
slope
of ray
slot
slow-acting
developer
slow
development
slow-drift
burst
slowing-down
radiation
slowly
varying component
slow
motion
slow-motion
drive
slow
motion drive assembly
slow
plate
slow
scan
SLR
camera
small
angle relationships
small-angle
scattering
small-aperture
telescope
small
circle
small
(diameter) source
smallest
detectable signal
small
flare
small
flare event
small
meteor
small
planet
small-scale
motions
small
telescope
smart
drive
smeared
band
to
smear
out
Smithsonian
astrophysical observatory
smoked
glass
smoothed
curve
homogeneous
smoothed-out
model
antenna
smoothing
smoothing
process
S/N
Snell's
law
SNO
SNO
neutrino detector
SO
SOAR
SOAR
telescope
astronomical
societies
Royal Astronomical
Society
Astronomical
Society
of Pacific
Publication of the Astronomical
Society
of the Pacific
support
socket
sodium
iodide detector
soft
component
soft
developer
softening
of radiation
soft
landing
very
soft
radiation
orrery
software
soft
X-ray region
soft
X-rays
SO
galaxy
(solar)
solar
solar
active region
forecast of
solar
activity
solar
activity index
solar
antapex
solar
apex
solar
astronomer
solar
atmosphere
solar
attraction
solar
aureole
solar
battery
solar
blind photomultiplier
solar
bombs
solar
burst
solar
calendar
solar
cell
solar
cell array
solar
chromosphere
solar
constant
solar
coordinates
solar
corona
solar
corpuscles
solar
corpuscular stream
solar
cosmic rays
maximum phase of
solar
cycle
solar
data
solar
day
solar
deuterium
solar
diagonal
solar
diameter
millionth of
solar
disk
Stoneyhurst
solar
disks
solar
distance
solar
disturbance
solar
eclipse
solar-eclipse
expedition
solar
eclipse viewer
total
solar
emission
solar
energy
solar
ephemeris
solar
equator
solar
eruption
solar
evolution
solar
facula
solar
filament
solar
filter
solar
flare
solar
flux
solar
flux density
solar
globe
solar
granulation
solar
granules
solar
haloes
solar
heating
solar
hemisphere
solar
hydrogen vortex
solar
illumination
solar
instrument
solar
interferometer
solar
interior
solarization
solarized
image
solar
limb
solar
limb darkening
solar
luminosity
solar
magnetic field
solar
magnetograph
solar-mapping
system
solar
mass
solar
matter
solar
medium
solar
meridian
solar
model
solar
model in deeper layers
solar
modulation phenomena
solar
motion
solar
neighbourhood
solar
neutrino flux
solar
neutrinos
solar
neutrino unit
microwave
solar
noise
solar
noise storm
solar
nutation
solar
observations
National
Solar
Observatory
solar
observing
solar
outburst
solar
paddle
solar
parallax
solar
patrol
solar
period
solar
phenomena
solar
photosphere
solar
physicist
solar
physics
solar
planets
solar
plasma
solar
plasma probe
solar
pole
solar
probe
solar
prominence
solar
protons
solar
quantities
solar
quiet magnetic secular
X-ray
solar
radiation
solar
radiation pressure
solar
radio astronomy
solar
radio burst
sporadic
solar
radio emission
solar
(radio) noise
solar
radio observations
solar
radio spectrum
solar
radio wave intensity
solar
radio waves
solar
radius
solar
recording
solar
repulsive force
solar
research
solar
rotation
mean
solar
second
zero air-mass
solar
spectral irradiation curve
solar
spectrograph
solar
spectrometer
solar
spectroscopy
solar
spectrum
solar(-spectrum)
ledger
solar
spectrum lines
solar
spot
solar
spot prominences
solar
studies
solar
surface
solar
surface Hα
solar
survey
solar
system
solar
system distances
solar-system
radar
tower
solar
telescope
solar
temperature
solar-terrestrial
events
solar-terrestrial
relations
solar
tidal wave
apparent
(solar)
time
local mean
solar
time
solar
tower
solar-type
star
solar
ultraviolet radiation
solar
wavelengths
solar
wind
solar
work
solar
X-radiation
solar
X-rays
solar
XUV observations
solar
year
solid
solid
angle
effective
solid
angle of antenna
solid-block
Schmidt
solid-block
Schmidt camera
solid
body
solid-body
rotation
solid
constituent
solid
disk
solid
grains
solid
matter
solid
mirror
solid
particles
solid
propellant
solid-propellant
rocket
solid
Schmidt camera
solid
state detector
solid-state
maser
solid
surface
solstice
numerical
solution
sonde
order
sorter
sound
emission
vertical incidence
sounder
ionospheric
sounding
sound
propagation
sound
wave
extended
source
source
brightness distribution
source
concentration
source
count
source
density
source
diameter
source
direction
source
directivity
source
distribution
source
function
radio
source
galaxy
source
image
source
major axis
source
model
radio
source
observations
principal
source
of decameter activity
source
of emission
source
of errors
source
of interference
source
of noise
source
of noise storm
source
of radiation
source
position
source
power
source
region
decameter
source
regions
survey of radio
sources
energy
sources
in stars
source
size
radio
source
structure
source
velocity
south
South
African astronomical observatory
South
African large telescope
spherical
south
bearing
south
celestial pole
south
declination
south
ecliptic pole
Southern
astrophysical research telescope
south(ern)
bearing
south(ern)
hemisphere
southern
latitude
southern
lights
European
Southern
Observatory
southern
polarity
southern
reference star program(me)
southern
reference stars
southern
sky
south(ern)
stars
south
galactic pole
south
pier
south
point
south
polar cap
south
pole
Soviet
6-m telescope
radio waves from
space
space
absorption
National Aeronautic and
Space
Administration
European
Space
Agency
space
astronomy
Kennedy
Space
Center
space-charge
oscillations
space
communication
space
craft
Hipparcos
spacecraft
spacecraft
astronomy
spacecraft
observation
spacecraft
trails
space-curvature
spaced
antennas
stellar
space
density
space
distribution
spaced
receiver method
space
exploration
space-explorer
space
flight
Goddard
space
flight center
space-like
spaceman
space
medicine
space
navigation
deep
space
network
space
observatory
space
optics
space
physics
space
probe
space-probe
space
quantization
space
research
space
rocket
space
science
National
Space
Science Data Center
space
ship
manned
spaceship
space
station
space
suit
Maui
Space
Surveillance system
space
technology
Next generation
space
telescope
Space
Telescope Science Institute
space
television
space-time
space
travel
space
vehicle
space
velocity
spacial
distribution
variable
spacing
variable
spacing
interferometer
lime
spar
laser
spark
spark
detector
spark
excitation
spark
spectrum
spatial
spatial
bandwidth
spatial
brightness
spatial
density
spatial
emission
Centre National d'Etudes
Spatiales
spatial
filter
spatial
filtering
spatial
frequency
spatial
fringe pattern
spatial
structure
spatial
survey
spatial
velocity
special
color index
special
relativity
special
theory of relativity
triple degenerated
species
specific
absorption
antenna
specification
volumetric
specific
heat
specific
intensity
speckle
interferometry
eclipse
spectacles
halogen
spectra
spectracon
spectral
absorption
spectral
analysis
spectral
band
spectral
channel
spectral
class
spectral
classification
Yerkes
spectral
classification system
spectral
color
spectral
density
spectral
distribution
spectral
elongation
spectral
emissivity
spectral
energy distribution
spectral
features
spectral
filter
spectral
flux density
spectral
index
spectral
intensity
zero air-mass solar
spectral
irradiation curve
21-cm radio
spectral
line
spectral
line broadening
spectral
line curvature
spectral-line
displacement
spectral
line emission
spectral
line intensity
spectrally
pure color
spectral
MW
stellar
spectral
MWs
spectral
observations
spectral
order
spectral
photometry
free
spectral
range
spectral
region
spectral
resolution
integrated
spectral
segment
spectral
sensitivity
spectral
sensitizing
spectral
sequence
spectral
series
spectral
term
parentage of
spectral
terms
spectral
transmission curve
spectral
type
effective-temperature
spectral-type
relation
late
spectral
types
spectral
variables
spectral
width
spectrobologram
spectrobolometer
spectro-comparator
spectrocon
low-dispersion
spectrogram
wide slit
spectrograph
spectrographic
spectrographic
equipment
spectrographic
method
spectrographic
observations
spectrograph
interferometric with selective amplitude modulation
spectrograph
slit
mass
spectrography
spectroheliocinematograph
hydrogen
spectroheliogram
spectroheliograph
spectrohelioscope
X-ray
spectrometer
spectrometric
X-ray
spectrometry
spectrophotometer
spectrophotometric
gradient
spectrophotometric
temperature
astronomical
spectrophotometry
slit-less
spectroscope
spectroscope
slit
spectroscopic
spectroscopic
absolute magnitude
spectroscopically
spectroscopic
binary
spectroscopic
binary star
spectroscopic
double star
spectroscopic
measurements
spectroscopic
method
spectroscopic
observations
spectroscopic
parallax
spectroscopic
research
spectroscopic
study
spectroscopist
multi-object
spectroscopy
spectroscopy,
multi-object
continuous
spectrum
spectrum
analysis
spectrum
analyzer
spectrum
height
spectrum
line
spectrum
line intensity
solar
spectrum
lines
spectrum-luminosity
correlation
spectrum-luminosity
diagram
spectrum-luminosity
relation
spectrum
observations
spectrum
of echo
turbulence
spectrum
of photosphere
spectrum
of radio source
spectrum
projector
dynamic
spectrum
record
spectrum
spread
specular
reflection
great
speculum
speculum
metal
photographic
speed
speed
changer
speed
of fading
speed
of light
speed
of recession
irregularity in
speed
of rotation
vertex
sphere
Schmidt aplanatic
sphere
camera
interstellar graphite
spheres
spherical
aberration
spherical
angle
spherical
astronomy
spherical
component
spherical
coordinates
spherical
corrector
spherical
dish
spherical
distribution
spherical
galaxy
spherical
halo
spherical
mirror
spherical
mirror camera
spherical
nebula
spherical
reflector
spherical
south bearing
spherical
subsystem
spherical
top
spherical-top
molecule
spherical
triangle
spherical
trigonometry
spherochromatic
aberration
oblate
spheroid
spheroidal
spheroidal
galaxy
spicule
chromospheric
spicules
spider
spider
line
cosmic ray
spike
spill
over
antenna
spillover
spillover
radiation
satellite's
spin
spin
casting
spin
doubling
spin
echo
spin
function
spin-lattice
interaction
spinning
electron
spinning
top
spin
orbital
spin-orbit
coupling
spin-orbit
interaction
spin-orbit
multiplet
spin-orbit
splitting
spinor
wave function
spin
quantum number
spin-relativity
doublet
electron
spin
resonance
spin-spin
coupling
spin-spin
interaction
spin
temperature
spin
uncoupling
Sc well-developed
spiral
spiral
arm
spiral
branch
spiral
formation
spiral
galaxy
spiraling
particle
spiralling
electrons
spiral
nebula
spiral
scan
spiral
structure
spiral
system
split
image
beam
splitter
Zeeman
splitting
splitting
factor
Spoerer's
law
spontaneous
disintegration
spontaneous
emission
spontaneous
emitter
spontaneously
film
spool
sporadic
coronal condensation
sporadic
E F
sporadic
ionization
sporadic
meteor
outburst
sporadic
outbursts of craters
sporadic
region
sporadic
solar radio emission
sweet
spot
spot
activity
spot
area
odd
spot
cycle
spot
diagram
orientation of
spot
group
spotlight
illumination
spot
model
reduced
spot
number
spot
penumbra
spot-prominence
solar
spot
prominences
spotted
area
spottedness
spot
umbra
spot
zone
spray
ejection
spray
prominence
spectrum
spread
point
spread
function
spread
in frequency
spreading
spread
in spectrum
spread
in time of travel
spread
in velocities
spread
of echo
spread
of observations
spread
velocity
spring
equinox
Springfield
mounting
Siding
Springs
observatory
spun-cast
mirror
north polar
spur
spurious
disk
spurious
effect
spurious
error
spurious
image
spurious
radiation
Sputnik
sputtering
spynor
field
square
degree
least
squares
fit
least
squares
method
squaring-on
SRS
program(me)
S
s-coupling
SS-coupling
SS
model
S
star
Ss-
radiometer
stability
stabilized
binoculars
stabilized
rocket
image
stabilizing
binoculars
stable
emission
stable
equilibrium
stable
prominence
moving
stage
stage
micrometer
nebular
stage
of nova
staggered
conformation
staggering
stain
time
standard
standard
antenna
standard
candle method
standard
catalogue
standard
chromatic diagram
standard
coordinates
standard
development
standard
deviation
standard
epoch
standard
error
standard
error of the mean
standard
eye for colorimetry
standard
eye for photometry
standard
film
standard-magnitude
star
standard
model
standard
n
standard
noise source
local
standard
of rest
standard
position
standard
radar equation
Harvard
Standard
regions
standard
signal generator
standard
source
standard
star
standard
system
standard
time
standard
time signals
standing
wave
Stanier's
distribution
secondary
star
double
star
astronomy
star
atlas
star
background
Yale bright
star
catalog
star
catalogue
star
catalogue work
star
chart
star
chart program
star
cloud
star
cluster
star-constants
star
density
star
diagonal
radio
star
diameter
radio
star
distribution
star
field
star
formation
star
formation process
star
globe
star
hopping
star
image
radio
star
interferometry
radio
star
investigations
Stark
effect
Stark
(effect) broadening
scattered
star
light
scattered
starlight
starlike
starlike
object
star
list
star
luminosity
star
map
star
model
star
monitor
star-navigation
star
near the zenith
variable
star
nomenclature
American Association of Variable
Star
Observers
star
of advancing spectral type
star
of low metal content
star
pair method
two
star
photometer
star
place
star
population
star
position
southern reference
star
program(me)
radio
star
record
starry
Information Bulletin on Variable
Stars
star's
brightness
star's
disk
star-shaped
star's
path
star
spectrum
star's
surface
radio
star
statistics
star
stream
radio
star
studies
radio
star
survey
local
star
system
time of
start
radio
star
trace
star
track
star
tracking
photoelectric registration of
star
transit
radio
star
twinkling
main sequenceof
star
types
radio
star
work
Zeeman
state
solid
state
detector
state
odd state
state
of ionization
state
of polarisation
closely coupled
states
United
States
Naval observatory
static
gravitational equilibrium
static
model
static
nonempty model
static
universe
tracking
station
stationary
atom
stationary
focal point
stationary
orbit
stationary
prominence
stationary
state
station
of planet
statistical
analysis
statistical
broadening
statistical
distribution
statistical
method
statistical
parallax
statistical
study
statistical
sum
statistical
theory
statistical
treatment
statistical
weight
stellar
statistics
steady
emission
steady
motion
steady
radiation
steady
state
steady(-state)
conditions
steady-state
cosmology
steady-state
density
steady-state
hypothesis
steady-state
model
steady-state
model universe
steady-state
theory
steady-state
universe
steerable
antenna
steerable
aperture
steerable
parabolic reflector
steerable
paraboloid
completely
steerable
paraboloid reflector
steerable
(radio) telescope
steerable
reflector
fully
steerable
telescope
Stefan-Boltzmann
constant
Stefan-Boltzmann
law
Stefan's
law
stellar
stellar
absorption coefficient
stellar
activity
stellar
association
stellar
astronomer
stellar
astronomy
stellar
atmosphere
stellar
brightness
stellar
classification
stellar
cluster
stellar
component
stellar
composition
stellar
constitution
stellar
coordinates
stellar
corona
stellar
deuterium
stellar
diameter
stellar
dilution factor
stellar
disk
stellar
distances
stellar
dynamics
stellar
energy
stellar
evolution
stellar
field
stellar
gas
stellar
hydromagnetics
stellar
image
stellar
intensity interferometer
Michelson
stellar
interferometer
stellar
interior
stellar
investigations
stellar
light
stellar
luminosity
stellar
magnetic field
stellar
magnitude
stellar
mass
stellar
material
stellar
model
stellar
motions
stellar
nomenclature
stellar
object
stellar
orbit
trigonometric
stellar
parallax
stellar
perturbations
stellar
photography
stellar
photometry
stellar
physics
stellar
plasma
stellar
polarization
stellar
population
stellar
pulsation
stellar
radiation
stellar
radiation field
stellar
radio source
stellar
radius
stellar
remnant of a supernova
stellar
rotation
stellar
scintillation
stellar
seeing monitor
stellar
space density
classification of
stellar
spectra
stellar
spectral MWs
stellar
spectrograph
stellar
spectroscopy
stellar
spectrum
stellar
statistics
stellar
structure
stellar
system
stellar
telescope
stellar
temperature
stellar
temperature scale
stellar
ultraviolet radiation
stellar
universe
stellar
variability
stellar
wind
stellar
work
stellar
world
echelon
step
step
method
stepped
exposure
step-up
excitation
step
wedge
steradian
stereo
comparator
stereocomparator
stereoscopic
effect
Stern-Gerlach
experiment
Steward
observatory
stibsolar
stiffness
still
image
stimulated
absorption
stimulated
emission
Stokes
law
Stokes
lines
Stokes
parameters
Stokes'
parameters
stone
stone
meteorite
Stoneyhurst
solar disks
stony-iron
stony-iron
meteorite
stony
meteorite
field
stop
stop
band
stop
bath
stop
down
stop-over
transition
stopping-down
storage
storage
efficiency
storage
of plates
storage
time
type I
storm
storm
and burst component
noise
storm
and bursts
storm
burst
Stormer
orbits
ionospheric
storminess
storm
of meteors
storm
radiation
storm
region
storm-time
secular
blue
stragglers
straight
line portion
gravitational
strain
stranger
atom
Centre de Donnees astronomiques de
Strasbourg
turbulent
strata
stratification
stratopause
stratoscope
stratosphere
stratus
stratus
clouds
stray
factor
stray
light
streaks
tidal
stream
streamed
figures
prominence
streamer
polar
streamers
hydrodynamical
streaming
meteor
(stream)
radiant
Strehl
ratio
relative line
strength
strength
of radiation
strength
of radio waves
thermal
stress
contrast
stretching
stretching
vibration
stria
striae
chromospheric
striation
string
method
stripped
atom
stripping
film
scan
strip
scan
Stromgren
photometry
Mount
Stromlo
and Siding springs observatory
strong
burst
very
strong
field
strong
galactic concentration
strong
image
strong
line
strong
source
strontium
structural
features
sequence of
structural
forms
zonal
structure
fine
structure
constant
local
structure
of neutral hydrogen
structure
of the universe
STScI
STScI
digital sky survey
Student's
test
21-cm line
studies
statistical
study
style
S-type
star
Subaru
telescope
subband
subclass
subdwarf
subdwarf
star
subemulsion
subenvelope
subfeature
subflare
subgiant
subgiant
star
subgroup
sublevel
sublimation
Caltech
sub-millimeter
observatory
sub-millimeter
wave
submillimeter
(wavelength) range
subordinate
line
subordinate
series
subpolar
subshell
subsidiary
maximum
subsidiary
peak
second
subsidiary
series
subsolar
point
subsolar
temperature
normal
substance
substandard
film
substate
substation
subsurface
subsurface
temperature
spherical
subsystem
subsystem
of stars
dark
subtraction
successive
exposures
sudden
commencement
sudden
commencement storm
sudden
cosmic-noise absorption
sudden
cosmic ray increase
sudden
disappearance
sudden
enhancement of atmospherics
sudden
ionospheric disturbance
sudden
magnetic disturbance
sudden
phase anomaly
space
suit
suitable
density
lead
sulphide
cell
statistical
sum
summation
band
sum(mation)
rule
summer
summer
solstice
summer
time
summit
Zeeman components
sum
rule
sum
rule intensity
in the vicinity of the
Sun
sunbeam
Sun-center
distance
sun
dial
sundial
sun
dog
Sun-Earth
distance
quiet
Sun
emission
scattered
sunlight
sunlight
exposure
sunlit
sunlit
aurora
sunlit
face
sunlit
hemisphere
sunlit
side
sunlit
surface
quiet
Sun
radiation
sunrise
Sun
satellite
Sun's
axis
Sun's
center
Sun's
central density
Sun's
central pressure
Sun's
central temperature
Sun's
disk
Sun's
distance
sun-seeker
sunset
sunshine
Sun's
interior
Sun's
magnitude
Sun's
mass
Sun's
mean angular diameter
sun
spot
magnetic life history of
sun-spot
visible
sunspot
sunspot
activity
zero
sunspot
area
sunspot
cycle
sunspot
development
sunspot
development chart
sunspot
emission
sunspot-evolution
table
sunspot
frequency
sunspot
group
sunspot
magnetic field
sunspot
maximum
sunspot
maximum period
sunspot
minimum
sunspot
number
sunspot
number period
sunspot
prominences
sunspot
radiation
longitudinal motion of
sunspots
sunspot
spectrum
sunspot
umbra
sunspot
zone
Sun's
surface
Sun's
system
Sun
tower
super-apochromat
superbolide
local
supercluster
superconducting
bolometer
superconducting
tunnel junction detector
superelastic
collision
superflare
supergalactic
equator
Supergalaxy
red
supergiant
supergiant
star
supergranule
superheavy
hydrogen
super
heterodyne receiver
superimposed
image
superior
superior
conjunction
superior
planet
super
Kamiokande
supermassive
star
supermultiplet
II
supernova
supernovae
supernovae
of plates
supernova
explosion
remnants of the
supernova
of A. D.
supernova
outburst
supernova
radio source
supernova
remnant
supernova
superposition
super
Plossl' eyepiece
supernova
superposition
super
Schmidt camera
Super-Schmidt
camera
supersensibilization
supersonic
superstar
power
supply
active
support
lateral
support
assembly
supported
supporting
wye
support
mechanism
support
of chromosphere
support
pad
support
point
pivot
supports
support
socket
support
system
support
unit
support
vanes
supposed
age
Venusian
surface
surface
accuracy
surface
adjustment
surface
brightness
surface
brightness temperature
surface
composition
surface
conditions
surface
density
surface
details
surface
effect
surface
element
surface
F
surface
features
surface
gravity
surface
Hα
surface
intensity
surface
irregularities
surface
photometer
meniscus lens with concentric
surfaces
surface
temperature
surface
tolerances
frustrated
surge
surge
ejection
surge
prominence
Maui Space
Surveillance
system
STScI digital sky
survey
surveying
surveying
astronomy
survey
of radio sources
site
surveys
swallow-tail
Swan
bands
swan-neck
swarm
frequency
sweep
sweep
drive
sweep-frequency
receiver
sweeps
of sky
sweet
spot
swept
frequency observations
swept-lobe
interferometer
fringe
swinging
swing
period
phase reversing
switch
switched
frequency radiometer
phase
switched
interferometer
phase
switching
symbiotic
star
term
symbol
symbol
of element
astronomical
symbols
syminetrical(-class)
telescope
totaly
symmetric
symmetrical
Cassegrain
symmetrical
mounting
symmetric(al)
top
p-fold
symmetric
axis
symmetric
eigenfunction
axially
symmetric
field
symmetric
level
axially
symmetric
problem
symmetric
rotator
rigid
symmetric
top
symmetric-top
molecule
plane of
symmetry
valence-type
symmetry
coordinates
symmetry
element
symmetry
factor
symmetry
MW
symmetry
properties
symmetry
selection rule
sympathetic
flare
synchro
terminal
synchrone
synchronous
detector
synchronous
motor
synchronous
motor drive
synchrotron
theory of
synchrotron
emission
synchrotron
mechanism
synchrotron
process
synchrotron
radiation
synchrotron
source
synchrotron
spectroscopy
synchrotron
theory
syndyname
syndyname
conoids
synodic
synodic
month
synodic
period
synodic
period of rotation at the equator
synodic
rotation
synodic
rotation period
synoptic
synoptic
chart
synoptic
map
synoptic
observations
synoptic
testing
two-dimensional
synthesis
aperture
synthesis
antenna
Cambridge optical aperture
synthesis
array
aperture
synthesis
interferometer
aperture
synthesis
method
aperture
synthesis
observations
synthesis
technique
synthesized
aperture
synthesized
beam
synthesized
cross
synthesized
interferometer
synthetic
aperture radar
Yerkes
system
systematic
accuracy
systematic
correction
systematic
difference
systematic
effects
systematic
error
systematic
motion
systematic
noise
solar
system
distances
System
I
System
II
radiometer
(system)
noise
total
system
noise
system
of astronomical constants
system
of bright rays
system
of catalogue
system
of comets
periodic
system
of elements
system
of fundamental proper motion
system
of galaxies
local
system
of hydrogen
system
of instrument
system
of planets
system
of reference
Dicke
system
receiver
system
temperature
line of
syzygies
syzygy
S-
,
S-
S-
S-
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